Generally such open-cam skewers have fairly poor holding power. Be wary, especially on front wheels, and especially with disc brakes. Disc action can pull your axle out of the drop-outs, then you're in 'the poo'.

These skewers have a lower cam leverage ratio than closed-cam skewers, so often they cannot be closed as firmly; and they tend to have a flat alloy face to grip your drop-outs, rather than a serrated steel face that bites in much better.

Maybe mundane but more secure.

Riding bikes in traffic - what seems dangerous is usually safe; what seems safe is often more dangerous.

Spectacularly light and never had an issue with them. Sure there's a theoretical difference between open and closed cam QRs but on a road bike with rim brakes I think if you do them up properly either will do the job just fine.

When man invented the bicycle he reached the peak of his attainments- Elizabeth West.